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Women who walked two or more hours a week or who usually walked at a brisk pace, had a significantly lower risk of stroke than women who didn't walk, a study published in Stroke: Journal of the American heart Association recently reported.
Compared to women who didn't walk:
More physically active people generally have a lower risk of stroke than the least active, with more-active persons having a 25 percent to 30 percent lower risk for all strokes, according to previous studies.
"Though the exact relationship among different types of physical activity and different stroke subtypes remains unclear, the results of this specific study indicate that walking, in particular, is associated with lower risk of stroke," the author said.
Researchers followed 39,315 U.S. female health professionals with an average age of 54. Every two to three years, participants reported their leisure-time physical activity during the past year - specifically time spent walking or hiking, jogging, running, biking, doing aerobic exercise, using exercise machines, playing tennis/squash/racquetball, swimming, doing yoga and stretching/toning. No household, occupational activity or sedentary behaviors were assessed.
During 11.9 years of follow-up, 579 women had a stroke (473 were ischemic, 102 were hemorrhagic and four were of unknown type).
The women who were most active in their leisure time activities were 17 percent less likely to have any type of stroke compared to the least-active women.
Researchers didn't find a link between vigorous activity and reduced stroke risk. The reason is unclear, but they suspect that too few women reported vigorous activity in the study to get an accurate picture and/or that moderate-intensity activity may be more effective at lowering blood pressure as suggested by some previous research.
Research Paper Details:
Sattelmair JR, Kurth T, Buring JE, Lee IM. Physical Activity and Risk of stroke in Women. Stroke. 2010 Apr 6.
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